Whether you re a seasoned veteran trying to perfect your game or a rookie learning the basics Penn tennis balls are the number one choice. Tribute the newest addition to the best-selling tennis ball line in America will become the standard by which all other tennis balls are measured. It features a controlled fiber release for perfectly even nap natural rubber for consistent feel and reduced shock and interlocked wool fiber for ultimate durability. Penn provides unparalleled consistency every time you hit the court. Available in several bulk case sizes up to 24 cans with 72 tennis balls total. Penn celebrated 100 Years of Excellence in 2010. Starting in a small town in Jeanette Pennsylvania in 1910 Penn is still America s #1 One Selling Tennis Ball. Also a purveyor of everything tennis we put our 100+ years of expertise into all our tennis equipment & apparel so you can perform at the highest level every time you step on the court.